Bathtub drain and sump



m. LA BARRE ZMZS BATHTUB DRAIN AND SUMP May @u w50 Filed April 26, 1947Patented May 30, 1950 BATH'IUB DRAIN AND SUMP Dwight La Barre, Detroit,Mich., assigner to Borg- Warner Corporation, Chicago, Ill., acorporation of Illinois Application April 26, 1947, Serial No. 744,270

8 Claims.

The present invention relates generally to bathtubs, basins, and thelike, and it has more particular reference to a bathtub drain and sumpassembly.

' One of the principal objects of this invention is to simplify aconstruction and arrangement of a bathtub drain and sump assembly and toimprove the efficiency and operation thereof.

Another principal object is the provision of a drain and sump assemblyfor facilitating the `rapid drainage of water, suds and the like fromthe tub.

Also it is a principal object to provide a drain and sump assemblywherein the sump is easily accessible for cleaning and `for the removalof any accumulation of foreign matter.

Still another principal object hereof resides in the provision of adrain and sump assembly wherein a strainer is so arranged as to providean annular gutter between it and a depressed region of the tub bottomwall, and strainer being readily demountable to afford access to thesump.

A still further object hereof is to provide an assembly of the charactercontemplated herein, which assembly is constructed and arranged so thatarticles which may have passed through the strainer will be retained inthe sump from which they may be retrieved before said articles aredischarged into the waste pipe.

Additional objects, aims, and advantages of the present invention willbe apparent to persons skilled in the art after the construction andoperation of the drain and sump assembly is understood from the withindescription.

It is preferred to accomplish the numerous objects of this invention,and practice the same,

in substantially the manner hereinafter fully described and as moreparticularly pointed out in the claims. Reference is now made to theaccompanying drawings which form a part of this specification.

In the drawings:

Fig. 1 is a vertical side elevation of a bathtub showing the drain andsump assembly contemplated herein Fig. 2 is a fragmentary plan lookingdown at in, and in these drawings like reference characters identify thesame parts in the diierent views.

The tub 5, as shown in Fig 1, has a rim 6 with an apron or panel 1extending down therefrom to the floor of the room, and it has agenerally nat bottom wall 8 which inclines downwardly toward thedrainage end of the tub at the right in Fig. 1.

In the arrangement shown in Fig. 3 the lower region of the bottom 8 hasan annular depression formed by a down-turned ange 9 with an annularinwardly extending shoulder Ill the radially inward portion of whichterminates in downturned lip II to provide a relatively wide drainopening D.

A strainer of novel construction is supported on shoulder Ill andcomprising a metal stamping of the form shown in detail in Fig. 3. Thisstrainer comprises a ilattened dome shaped top I2 the central region ofwhich is in approximately the plane of the tub bottom 8 and has acentral aperture in the bottom of a countersink I3, the purpose of whichwill hereinafter be explained.

As shown in Fig 3, the strainer is of inverted cup-shape, having adepending annular side wall I4 that is interrupted by a plurality ofrecesses I5 which define egress openings. These egress openings are ofsuch dimensions that they permit small articles and the like to passtherethrough. The spacing of the openings is such that supporting feetMa are deiined between them for maintaining the strainer top in desiredrelation to the tub bottom wall B. The side wall I4 of the strainer islocated in radially inward spaced relation from the flange 9 forming thedepression, and the supporting feet I 4a rest upon the shoulder I at thebottom of the depression. This arrangement is made in order toaccelerate the flow and increase the volume of water out of the tub, andthe strainer wall I 4, being spaced from depression ange 9, provides anannular gutter G in the depression surrounding the strainer.

A sump mounting annulus or ring I5, having an inside diameter sufficientto receive the lower flange II of the depression, is placed against theunder-surface of shoulder Ill, and is permanently anchored thereto bywelding as at I'I and I 8. The outside diameter of annulus I 6 isgreater than the diameter oi' the depression so that the outer region ofthe annulus projects beyond the vertical plane of wall 9. This outerregion of the annulus provides flange means for :attachment of abasin-like sump I9 which has a greater diameter than the depression inthe tub bottom wall The upper edge of the sump has: an lnturned ange 2Bprojecting under annulus I6 Where it is heldin assembly therewith bymeans of bolts 2l passing through said fiange and threaded into tappedopenings in the outer region of the annulus I6. In order to preventleakage, a gasket 22 is interposed between fdange 2li and annulusl tosealthejoint between `these parts.

The basin-like bottom 23 on the sump 'I9 'is apertured preferably at itscenter and an overflow drain pipe 24 is secured in said opening :bywelding as shown at 25 and 26. projects up into the sump asuitabledistance and prevents articles which may fall `into the sump,Vthrough the strainer recesses .lfrom beingdisf charged into drain pipe24.

For the purpose of demountably supporting theV strainer I2 on theshoulder it@ Athe/sump"has cross piece or spider 2i below thehorizontal-plane of the lower edge of depression ange i l and atitS.central .region the cross `piece has an up- 'standing 'boss 28 Whichfiscentrally f-boredand ,tapped as at 2'9. clearly shown in .Eig. 3, -the.topi of .boss..2l8 is `immediately 'below the strainer This pipe 2d l.ountersink fl`3, .and l.its upper end VVhas `a taperedZSgunt'il.the.headseatsinisaideountersink, thus e ,iirmly butdemountablysecuring the strainer ,in fposfition .against the .shoulder 4.5. g

g .From :the foregoing v-it will .be .seen .-that the drainage of 'waterI4from the l.bottom of the .tub

is quite rapid and any articles which may reaeh .'.inthefgutter G. and.then .through recesses .l5 into lthesump will V.'rnest..instanees.gravitate .to the Sbottom of the sump, `.but .the .waterlvvillfaceumulatednfthefsumpuntil itfspills :over .the top'o {drainipipe `2f! :for disposal. .It .is thereafter a :comparatively .simpleloperation -to .remove -the articles ,xfrom thesumpVmerely-leyunserewin-g bolt 3|1and lifting the=strainer 42 .-from vtheshoulder f-Hl, fthus fgiving=readyaccess tozthe.. sump for `.the removalof articles;` fas well fas .for 1cleaning Athe :sump of fextr'aneousmattersuch as! sediment'ran'd --theilike .While -this ninvention :has-been .described l.in detail Lin fone -Uf :its preferred --forms `orYembodi- Hments1 :it'fwill beiapparenttorpersons skilled in thelart-,waiter understanding --the improvements con--templatedfherein,thatvariouscchanges:andmodi- =cationsfrnay bemade-therein without-departing 'from '.thesspirit for scope '.thereof.It fis l aimed in the appended y.claims tofeovervall such changes:

Vv*What ris felaimed .is

"1.' QA' bathtub, basin, 'and the like having an apertmed *depressionEin its 4'bottom defined `by a pendent Wall, an -inturned shoulder fanda disf'cha'rge iopening; a -strainer'fin :said -depressioncomprisedfofiatonwallatileast: a'portion of Awhich :is ipr'oxirnate theplane fof the tub hott-ern Vvand V`fhaving an apertured countersink,vand apertured Said sump in a plane above the top of said drain pipe; anupstanding axialboss on said spider having a threaded bore and having arecessed upper end seating said strainer countersink; and a Screwinserted through said strainer with its head seated in said countersinkand with its shank engaged in the threaded bore of said boss.

2. A bathtubgbasin, and the like .having an apertured depression in itsbottom dened by a pendent Wall, an inturned shoulder and a dischargeopening; a strainer in said depression comprised Lpf a top wall havingan apertured oountersinky :and .apertured supporting means dependingfromf-said top Wall and arranged on Y said shoulder .ini-radiallyinwardly spaced relation tothe pendent wall of said depression; anannulus-anch'ored'toithe underside of said shoulder; la :sump secured tosaidrannulus; an overflow drain pipe communicating with said sump abovethebottom. of ...the-latter.; ,.a' Atransverse .member in ,theupperregion of..said.sump, said member having la `threaded bore .alined with`.said strainer aperture; and a screw inserted through. .said.straineraperture with its .head seated insaid acountersink and-with.its-shank engaged vin -the.

.threaded bore.

3. A bathtub, basin, :and the like having .an:apertured-.depression5in-its bottom defined by a :pendent .wa-.11, aan`inturned shoulder and a-=dis `charge lopening; .an.=inverted/eup-shapedfstrainer having an apertured side wall resting orrsaid.shoulder fand .spaced eradially `inward from r-said pendent Wallto-deneaigutter gin. said .depression surrounding said strainer; a sumpyconnefrted sto and depending .from said inturned shoulder; an overflowf drain pipe :having ,an end extended 1.11pward finto .said sump; acrossmember `on 4said .sump ,-above..said drain pipe; and -means -Vattachiingfsaid cross member ,to said 'strainer -for de- -mountably Vmaintainingsaid strainerpn .said-.de-

pression shoulder. Y

-4. A1bathtub,-basin,.andlthedike .fhaving anapertured depression fin:its bottom defined `by .a ,pendent .wall, an yirl-turned .shoulder .and.a dischargeaopening; an .inverted cup shaped strainer 1in Vsaiddepression, sthe Itop wall of said .strainer having an .-aperturedAcountersink, and :the .side wall of saidstrainer.beingmecessed-andsupported y.on saidshoulderfin radiallyinwardly spacedmela- ,tionito the pendent wall ofsaidedepressionrtode-.iine #an annular gutter; :a tsumphaving .aiange .atitsztopbeneath saidshoulder. and carried-.thereby; means :for i draining said sump; f a@Spider an .ranged {transversely across -said sump .in va Tplane aboveesaiddrain v:means: a :post .on fsaid spider rhavingfa'borewith a.eountersunknpperend .seat- -ing said strainers countersinkg-. andsecuringlmeans .coactingmi-th said-strainerI aperture and'therbore vnfsaid post for .demountably maintaining .said strainer on said depressionshoulder.

5. A tub, basin, and the like l.having an :aperttured `.depression :in:its sbottom ',dening a =,dis charge outlet; sa' shoulder rat the.bottom of .said

depression surrounding said outlet; anrinverted n charge outlet; ashoulder surrounding said outlet below the plane of the tub bottoms; aninverted cup-shaped strainer having a top wall approximately in theplane of the tub bottom and having an apertured side wall supported onsaid shoulder, the diameter of said side wall being less than thediameter of said depression whereby a gutter is provided surroundingsaid strainer; a sump carried by said shoulder beneath said depressionin communication with said discharge outlet; and an overflow drain pipeextending up through the bottom wall of said sump.

7. A tub, basin, and the like having an apertured depression in itsbottom dening a discharge outlet; a shoulder surrounding said outletbelow the plane of the tub bottom; flange means projecting outward fromsaid shoulder; a strainer supported on said shoulder, said strainerbeing comprised of a top wall, and a cylindrical side wall havingrecesses extending upward from its lower edge, the diameter of saidcylindrical wall being less than the diameter of Said depression wherebyan annular gutter is provided which is drained through said recesses; asump carried by said ange means beneath said depression in communicationwith said discharge outlet; and an overflow drain pipe communicatingwith said sump through a wall thereof.

8. A tub and the like having a bottom with an apertured depressiontherein deiined by a depending wall, an inwardly extending shouldermember surrounding a central opening, and having an outwardly extendingflange member; a strainer comprised of a top wall at least a portion ofwhich is approximately in the plane of the tub bottom, and aperturedsupporting means depending from said top wall and arranged on saidshoulder member in radially inwardly spaced relation to the dependingwall of said depression thereby defining a gutter surrounding saidstrainer; a sump having a radial flange cooperatively associated withsaid outwardly extending flange member and secured thereto; an overflowdrain pipe having an end extending upward into said sump; a xed crossvmember` beneath said strainer top wall; and means inserted through saidstrainer top wall and engaged with said cross member for maintainingsaid strainer in position on said shoulder member.

DWIGHT LA BARRE.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 298,841 Friedrich May 20, 1884686,909 Schillinger Nov. 19, 1901 2,246,390 Smith June 17, 1941 FOREIGNPATENTS Number Country Date 400,489 Germany Aug. l1, 1924

